Speed Density tune to pass ca OBD scan

[Miked.]

Hey guys, currenty have my sierra tuned to run in speed density, which still has 2 dtc's that set, but the MIL is turned off. I need to smog the truck for a sale, and in CA I cant have any DTC's detected by the scanner. I was hoping someone can help me figure out what to change in HPT's need to be made so I can at least have it pass the OBD test, then I can just revert back to the SD tune.

I guess just turning off the codes will cause the truck to not run or run very poorly. I just need it run enough to have all the readiness codes complete and not DTC's

[5FDP]

The truck "should" at least run fine for a little bit if you set the MAF dtc's to no error reported. Then you could revert back to first error with the SES box unchecked.

[Miked.]

Tried it last night but it wouldn't run at all, would fire up but die. But it also was a cold start, wondering if once it warmed up and in CL it would run